Published January 1, 2024 | Version v1
Dataset Open

Process-Based Intercomparison of Water Isotope-Enabled Models and Reanalysis Nudging Effects

Authors/Creators

  • 1. ROR icon The University of Tokyo
  • 2. ROR icon Chiba University
  • 3. ROR icon Kongju National University
  • 4. Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research
  • 5. ROR icon Sun Yat-sen University

Description

Simulations of Water Isotope-Enabled Models Nudged Toward Reanalyses [Period: 1979 - 2020]


* The associated article utilizing this dataset

Bong, H., Cauquoin, A., Okazaki, A., Chang, E.-C., Werner, M., Wei, Z., Yeo, N., & Yoshimura, K. (2024). Process-based intercomparison of water isotope-enabled models and reanalysis nudging effects. Journal of Geophysical Research: Atmospheres, 129, e2023JD038719. https://doi.org/10.1029/2023JD038719

* Experiment Name

1. IsoGSM.JRA55
2. IsoGSM.NCEPR2
3. IsoGSM.ERA5
4. MIROC5-iso.JRA55
5. ECHAM6-wiso.JRA55

* Selected 17 Levels (hPa)

 1000, 925, 850, 700, 600, 500, 400, 300, 250, 200, 150, 100, 70, 50, 30, 20, 10 

* Variables

NAME LEVELS LONG NAME UNIT
temp 1 Surface_temperatrue degC
temp2 1 2m_temperature degC
pres   1 Surface_pressure hPa
ev 1 Surface_evaporation_rate mm/day
ev1   1 Surface_evaporation_rate_1 mm/day
ev2 1 Surface_evaporation_rate_2 mm/day
pr 1 Surface_precipitation_rate mm/day
pr1 1 Surface_precipitation_rate_1 mm/day
pr2 1 Surface_precipitation_rate_2 mm/day
spfh2m 1 Surface_specific_humidity kg/kg
spfh12m 1 Surface_specific_humidity_1 kg/kg
spfh22m 1 Surface_specific_humidity_2 kg/kg
d18O 17 d18O_specific_humidity per mil
d18Oe 1 d18O_evaporation per mil
d18Op 1 d18O_precipitation per mil
d18Os 1 Surface_d18O_specific_humidity per mil
dD 17 dD_specific_humidity per mil
dDe 1 dD_evaporation per mil
dDp 1 dD_precipitation per mil
dDs 1 Surface_dD_specific_humidity per mil
dexcess 17 d-excess_specific_humidity per mil
dexcesse 1 d-excess_evaporation per mil
dexcessp 1 d-excess_precipitation per mil
dexcesss 1 Surface_d-excess_specific_humidity per mil
q 17 Specific_humidity kg/kg
q1 17 Specific_humidity_1 kg/kg
q2 17 Specific_humidity_2 kg/kg
t 17 Temperature degC
u 17 U_Wind m/s
v 17 V_Wind m/s
w 17 W_Wind m/s
omega 17 Pressure_vertical_velocity Pa/s
gh 17 Geopotential_height gpm

* delta for water isotopes in precipitation
   d18Op = ((pr1/pr)*1. - 1.)*1000.
   dDp   = ((pr2/pr)*1. - 1.)*1000.
* delta for water isotopes in evaporation
   d18Oe = ((ev1/ev)*1. - 1.)*1000.
   dDe   = ((ev2/ev)*1. - 1.)*1000.
* delta for water isotopes in near-surface vapor
   d18Os = ((spfh12m/spfh2m)*1. - 1.)*1000.
   dDs   = ((spfh22m/spfh2m)*1. - 1.)*1000.
* delta for water isotopes in atmospheric vapor (17 levels)
   d18O  = ((q1/q)*1. - 1.)*1000.
   dD    = ((q2/q)*1. - 1.)*1000.

* Files

|-- Total.monthly.IsoGSM.JRA55.nc
|-- Total.monthly.IsoGSM.NCEPR2.nc
|-- Total.monthly.IsoGSM.ERA5.nc
|-- Total.monthly.MIROC5-iso.JRA55.nc
|-- Total.monthly.ECHAM6-wiso.JRA55.nc
|
|-- IsoGSM.JRA55
|    |-- Total.climatology.IsoGSM.JRA55.nc
|    |-- Total.seasmean.DJF.IsoGSM.JRA55.nc
|    |-- Total.seasmean.JJA.IsoGSM.JRA55.nc
|    |-- Total.seasmean.MAM.IsoGSM.JRA55.nc
|    |-- Total.seasmean.SON.IsoGSM.JRA55.nc
|    |-- Total.yearly.IsoGSM.JRA55.nc
| 
|-- IsoGSM.NCEPR2
|    |-- Total.climatology.IsoGSM.NCEPR2.nc
|    |-- Total.seasmean.DJF.IsoGSM.NCEPR2.nc
|    |-- Total.seasmean.JJA.IsoGSM.NCEPR2.nc
|    |-- Total.seasmean.MAM.IsoGSM.NCEPR2.nc
|    |-- Total.seasmean.SON.IsoGSM.NCEPR2.nc
|    |-- Total.yearly.IsoGSM.NCEPR2.nc
| 
|-- IsoGSM.ERA5
|    |-- Total.climatology.IsoGSM.ERA5.nc
|    |-- Total.seasmean.DJF.IsoGSM.ERA5.nc
|    |-- Total.seasmean.JJA.IsoGSM.ERA5.nc
|    |-- Total.seasmean.MAM.IsoGSM.ERA5.nc
|    |-- Total.seasmean.SON.IsoGSM.ERA5.nc
|    |-- Total.yearly.IsoGSM.ERA5.nc
| 
|-- MIROC5-iso.JRA55
|    |-- Total.climatology.MIROC5-iso.JRA55.nc
|    |-- Total.seasmean.DJF.MIROC5-iso.JRA55.nc
|    |-- Total.seasmean.JJA.MIROC5-iso.JRA55.nc
|    |-- Total.seasmean.MAM.MIROC5-iso.JRA55.nc
|    |-- Total.seasmean.SON.MIROC5-iso.JRA55.nc
|    |-- Total.yearly.MIROC5-iso.JRA55.nc
| 
|-- ECHAM6-wiso.JRA55
|    |-- Total.climatology.ECHAM6-wiso.JRA55.nc
|    |-- Total.seasmean.DJF.ECHAM6-wiso.JRA55.nc
|    |-- Total.seasmean.JJA.ECHAM6-wiso.JRA55.nc
|    |-- Total.seasmean.MAM.ECHAM6-wiso.JRA55.nc
|    |-- Total.seasmean.SON.ECHAM6-wiso.JRA55.nc
|    |-- Total.yearly.ECHAM6-wiso.JRA55.nc
| 
|=== Interpolated Dataset for Comparison (T42) ===
| 
|-- Total.monthly.IsoGSM.JRA55.T42.nc
|-- Total.monthly.IsoGSM.NCEPR2.T42.nc
|-- Total.monthly.IsoGSM.ERA5.T42.nc
|-- Total.monthly.MIROC5-iso.JRA55.T42.nc
|-- Total.monthly.ECHAM6-wiso.JRA55.T42.nc
|
|-- IsoGSM.JRA55.T42
|    |-- Total.climatology.IsoGSM.JRA55.T42.nc
|    |-- Total.seasmean.DJF.IsoGSM.JRA55.T42.nc
|    |-- Total.seasmean.JJA.IsoGSM.JRA55.T42.nc
|    |-- Total.seasmean.MAM.IsoGSM.JRA55.T42.nc
|    |-- Total.seasmean.SON.IsoGSM.JRA55.T42.nc
|    |-- Total.yearly.IsoGSM.JRA55.T42.nc
|
|-- IsoGSM.NCEPR2.T42
|    |-- Total.climatology.IsoGSM.NCEPR2.T42.nc
|    |-- Total.seasmean.DJF.IsoGSM.NCEPR2.T42.nc
|    |-- Total.seasmean.JJA.IsoGSM.NCEPR2.T42.nc
|    |-- Total.seasmean.MAM.IsoGSM.NCEPR2.T42.nc
|    |-- Total.seasmean.SON.IsoGSM.NCEPR2.T42.nc
|    |-- Total.yearly.IsoGSM.NCEPR2.T42.nc
|
|-- IsoGSM.ERA5.T42
|    |-- Total.climatology.IsoGSM.ERA5.T42.nc
|    |-- Total.seasmean.DJF.IsoGSM.ERA5.T42.nc
|    |-- Total.seasmean.JJA.IsoGSM.ERA5.T42.nc
|    |-- Total.seasmean.MAM.IsoGSM.ERA5.T42.nc
|    |-- Total.seasmean.SON.IsoGSM.ERA5.T42.nc
|    |-- Total.yearly.IsoGSM.ERA5.T42.nc
|
|-- MIROC5-iso.JRA55.T42
|    |-- Total.climatology.MIROC5-iso.JRA55.T42.nc
|    |-- Total.seasmean.DJF.MIROC5-iso.JRA55.T42.nc
|    |-- Total.seasmean.JJA.MIROC5-iso.JRA55.T42.nc
|    |-- Total.seasmean.MAM.MIROC5-iso.JRA55.T42.nc
|    |-- Total.seasmean.SON.MIROC5-iso.JRA55.T42.nc
|    |-- Total.yearly.MIROC5-iso.JRA55.T42.nc
|
|-- ECHAM6-wiso.JRA55.T42
     |-- Total.climatology.ECHAM6-wiso.JRA55.T42.nc
     |-- Total.seasmean.DJF.ECHAM6-wiso.JRA55.T42.nc
     |-- Total.seasmean.JJA.ECHAM6-wiso.JRA55.T42.nc
     |-- Total.seasmean.MAM.ECHAM6-wiso.JRA55.T42.nc
     |-- Total.seasmean.SON.ECHAM6-wiso.JRA55.T42.nc
     |-- Total.yearly.ECHAM6-wiso.JRA55.T42.nc

Abstract

The products from the Stable Water Isotope Intercomparison Group, Phase 2, are currently used for numerous studies, allowing water isotope model-data comparisons with various isotope-enabled atmospheric general circulation model (AGCMs) outputs. However, the simulations under this framework were performed using different parameterizations and forcings. Therefore, a uniform experimental design with state-of-the-art AGCMs is required to interpret isotope observations rigorously. Here, we have built a publicly available dataset of isotope-enabled nudged simulations from 1979 to 2020, utilizing three models and three reanalyses to investigate the ability of the isotope-enabled AGCMs to reproduce the spatial and temporal patterns of water isotopic composition observed at the surface and in atmospheric airborne water.

Files

ECHAM6-wiso.JRA55.T42.zip

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Additional details

Related works

Is published in
Journal article: 10.1029/2023JD038719 (DOI)

Funding

Japan Society for the Promotion of Science
Grant 22H04938
Japan Society for the Promotion of Science
Grant 21H05002
Ministry of Education, Culture, Sports, Science and Technology
Grant JPMXD0722680395
Environment Research and Technology Development Fund
Grant JPMEERF21S12020